Reddy

Speed density AKA map sensors do not work with 2-strokes. Isn't that just wonderful?

90turboteg

thats so sad

45psi

ok. why dont they work?

dohc

Ya why not?

Reddy

Well since you asked little jimmy, becuase of the resonance properties of a 2-stroke motor, a map sensor becomes worthless. Here's a datalog maybe it'll make sense:





Unlike a 4-stroke air goes back into the intake manifold and pressurizes it. So measuring the pressure won't work since its not always under constant vaccumm when running. Whitey is not happy.

Ravage70

Whitey got owned.
Now what Dr. Whitey?

con

reed vavles and piston ports= terable vacume signals :P

Reddy

Onto the wonderful world of MAF.


Anyone got a Ford MAF?

Ravage70

what are u using to run the show?
megasquirt?

con

your going to try and calibrate it with a heated wire sensor? you are better man that I if you can pull it off, good luck